[PATCH 2/2] x86/fred: Fix build with CONFIG_IA32_EMULATION=n

Xin Li
2024-01-27T10:08:55Z

When CONFIG_IA32_EMULATION=n, int80_emulation() is NOT defined, fix it.

Fixes: 5e0636a41485 ("x86/fred: FRED entry/exit and dispatch code")
Link: https://lore.kernel.org/lkml/20240126100519.GBZbOD3xFB0v3mp5B1@fat_crate.local/
Reported-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Xin Li <xin3.li@intel.com>
---
arch/x86/entry/entry_fred.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/x86/entry/entry_fred.c b/arch/x86/entry/entry_fred.c
index 06d00c60ea64..ac120cbdaaf2 100644
--- a/arch/x86/entry/entry_fred.c
+++ b/arch/x86/entry/entry_fred.c
@@ -62,11 +62,13 @@ static noinstr void fred_intx(struct pt_regs *regs)
case X86_TRAP_OF:
return exc_overflow(regs);

+#ifdef CONFIG_IA32_EMULATION
/* INT80 */
case IA32_SYSCALL_VECTOR:
if (ia32_enabled())
return int80_emulation(regs);
fallthrough;
+#endif

default:
return exc_general_protection(regs, 0);
--
2.43.0